Phylum ✦ Trusted

Animals with jointed legs and exoskeletons (insects, spiders, crustaceans—the largest phylum).

Animals with a backbone (or notochord), including humans, fish, and birds. phylum

Soft-bodied animals, often with shells (snails, clams, octopuses). and birds. Soft-bodied animals

Phyla help biologists understand evolutionary relationships. Organisms in the same phylum—say, a human and a fish—might look very different, but they share a basic body blueprint (in this case, belonging to Chordata ). Phylum Chordata | manoa.hawaii.edu/ExploringOurFluidEarth often with shells (snails

Situated just below and above Class in biological classification, a phylum groups organisms based on a general, shared body plan or fundamental developmental structure. What is a Phylum?

Each phylum represents a specific evolutionary path, defined by unique characteristics like internal structure, body symmetry, and mode of development.